Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2016	Jan. 31, 2016	Apr. 30, 2016	Oct. 31, 2015
Taxes [Line Items]
Statutory federal income tax rate	35.00%		35.00%
Gross unrecognized tax benefits	$ 112,100		$ 112,100
Unrecognized tax benefits that would affect effective tax rate	109,200		109,200
Long-term deferred income taxes	282,393		282,393	$ 273,909	[1]
Fiscal Year 2012 | Taiwan Taxing Authority
Taxes [Line Items]
Unrecognized tax benefits decrease resulting from settlement		$ 1,100
Fiscal year 2011, 2010, and 2009 | California Franchise Tax Board
Taxes [Line Items]
Reduction in deferred tax asset due to tax settlement		4,900
Unrecognized tax benefits decrease resulting from settlement		10,300
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount		$ 5,400
Fiscal2010to2015 | India Taxing Authority
Taxes [Line Items]
Tax Adjustments, Settlements, and Unusual Provisions	2,400
Minimum
Taxes [Line Items]
Estimated potential decrease in underlying unrecognized tax benefits	0		0
Maximum
Taxes [Line Items]
Estimated potential decrease in underlying unrecognized tax benefits	$ 20,000		$ 20,000
New Accounting Pronouncement, Early Adoption, Effect
Taxes [Line Items]
Deferred income taxes, current				(95,000)
Long-term deferred income taxes				$ 95,000

[1] Derived from audited financial statements.